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implemented type(X).min and type(X).max for all integer types

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This commit is contained in:
Harikrishnan Mulackal
2020-05-11 14:51:13 +05:30
parent 4c1e821e01
commit e54c4eecfc
13 changed files with 626 additions and 29 deletions
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libsolidity/codegen/ir/IRGeneratorForStatements.cpp
+17 -3
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@@ -477,12 +477,16 @@ bool IRGeneratorForStatements::visit(BinaryOperation const& _binOp)
return false;
}
if (commonType->category() == Type::Category::RationalNumber)
{
define(_binOp) << toCompactHexWithPrefix(commonType->literalValue(nullptr)) << "\n";
return false; // skip sub-expressions
}
_binOp.leftExpression().accept(*this);
_binOp.rightExpression().accept(*this);
if (commonType->category() == Type::Category::RationalNumber)
define(_binOp) << toCompactHexWithPrefix(commonType->literalValue(nullptr)) << "\n";
else if (TokenTraits::isCompareOp(op))
if (TokenTraits::isCompareOp(op))
{
if (auto type = dynamic_cast<FunctionType const*>(commonType))
{
@@ -1175,6 +1179,16 @@ void IRGeneratorForStatements::endVisit(MemberAccess const& _memberAccess)
result ^= fromBigEndian<uint64_t>(function.first.ref());
define(_memberAccess) << formatNumber(u256{result} << (256 - 32)) << "\n";
}
else if (member == "min" || member == "max")
{
MagicType const* arg = dynamic_cast<MagicType const*>(_memberAccess.expression().annotation().type);
IntegerType const* integerType = dynamic_cast<IntegerType const*>(arg->typeArgument());
if (member == "min")
define(_memberAccess) << formatNumber(integerType->min()) << "\n";
else
define(_memberAccess) << formatNumber(integerType->max()) << "\n";
}
else if (set<string>{"encode", "encodePacked", "encodeWithSelector", "encodeWithSignature", "decode"}.count(member))
{
// no-op